Detection of subsurface cavities by surface remote sensing techniques
Title:
Detection of subsurface cavities by surface remote sensing techniques
Author:
Fountain, L. S.
Personal Author:
Publication Information:
Washington : Federal Highway Administration ; Springfield, Va. : Available through the National Technical Information Service, 1975.
Physical Description:
x, 126 p. : ill. ; 27 cm.
General Note:
Title from cover.
Performed by Southwest Research Institute for U.S. Federal Highway Administration.
"June 1975."
"Report no. FHWA-RD-75-80."